Often referred to as ghost stations, some travelers obsess over tracking down abandoned subway stations. Subway networks around the world have stations there were cut off from service or never used at all, it's just a matter of finding them. Here are five cities with plenty of options for the abandoned metro-station hunter.

The most important social holiday in China, Chinese New Year is tied to the lunar Chinese calendar, where every month begins on the darkest day. The holiday usually falls at the end of January or beginning of February. This year its Jan. 31 -- hey, that's today!-- and marks the Year of the Horse; people born in this year are said to be clever, kind, animated and energetic. Ready to celebrate? Here are the top seven cities outside of China that are going to be full of festivities.